This limited edition pin is part of the Disney Catalog Cover Artwork Set 4 #21374 released through the Disney Catalog or DisneyStore.com.

It features an orange cover Halloween cover with several Disney characters in masks along with Mickey in the center. The most noticeble character is Winnie the Pooh wearing a Stitch mask. You can display the pin standing up like a picture.
Mickey as Beast
Snow White as Maleficent
Tigger as Pooh
Minnie as Marie
Donald as Jiminy
Tinker Bell as Snow White
Dalmatian Puppy as Cruella
Pooh as Stitch